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Letters Patent li o. 65,398, dated June 4, 1867.

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TO ALL. WHOM IT MAY CONCERN:

I do hereby declare that the following is a, full and exact dcseriptionof my process for Making Crystal Shred Gold: v i i I 1 I first make a solution of gold in nitro-muriotic acid by the usual process ayell known to chemists and metallurgists. I then, Without evaporating the-solution, add as much as two-thirds of pure Wnterto this solution of gold. I then take one-thind of the weight of gold dissolved of pure sugar. I then procure a glass balloon or mattress,- which I cut off at the top, making it a sort of deep evaporating dish. I then set the whole over a steam bath. As soon as I perceive the gold forming into leaves, shreds, or fibres floating on topthe liquiior sticking to the sides, or falling to the bottom of the glass vessel, and think their fabric is strong enough to hear handling, I lift them out of the liquid with a vulcanized India-rubber spoon or dipper attached to a glass rod and plaeethem on a filter. I continue this operation until the sugar in the solution aided by heat has caused all the precipitation of gold in the form above described. I then take this gold, wush it' thoroughly, dry it on the filter, so nsto handle it as little as possible. I weigh it in given quantities, and heat it in little porcelain crucibles to a dull red heat. It is then ready to be used in filling carious teeth. 7 i Y i What I claim simply as new in this in tho pboeess above specified is, the perfect controll obtain for making shred or gold fibres ofthe consistency best suited for filling teeth. In my first process the gold shreds obtained, too much weight or thickness. They being only lifted out of the solution when the gold had ceased pi cipitaiing their thickness depended necessarily upon the amount of gold in solution or surface deposited upon. Therefore to make shreds of the ro er livhtness and consistencv it reuired a rent number of vessels to make it;

v i P a t g in, or, in other words, a very extended surface to deposit upon. By the improvement ab we speclfied'I claim that the process is vastly simplified, enabling any one to make gold shreds with much less trouble and expense,

and of the consistency most desired. Therefore. as my invention consists in the application of the ebove-speciiied process, described also in any application for patent for fibrous gold, dated March 19, 1867) for improvement in making shred goldywhal: I wish to secure by Letters Patent, is-

The above process, or any other process substantially the same as specified.

I LAMM.

Witnesses:

v ATE. CRoMBAcH,

.ALcsn J. 

